body {
    background: cornflowerblue no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    text-align: center;
    font-family: Helvetica, Tahoma, Arial, STXihei, "华文细黑", "Microsoft YaHei", "微软雅黑", sans-serif;
}

input {
    border: #ffffff 1px solid;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
}

.login-form {
    width: 360px;
    height: 220px;
    color: dodgerblue;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    text-align: center;
    position: absolute;
    background-color: white;
    font-weight: 900;
}

.login-group {
    margin-top: 22px;
}

.uname {
    width: 251px;
    height: 36px;
    border: #ffffff 1px solid;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    -webkit-box-shadow: 1px 1px 1px rgba(0, 0, 0, .45), inset 1px 1px 1px rgba(255, 255, 255, .30);
    -moz-box-shadow: 1px 1px 1px rgba(0, 0, 0, .45), inset 1px 1px 1px rgba(255, 255, 255, .30);
    box-shadow: 1px 1px 1px rgba(0, 0, 0, .45), inset 1px 1px 1px rgba(255, 255, 255, .30);
}

.upass {
    width: 251px;
    height: 36px;
    border: #ffffff 1px solid;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    -webkit-box-shadow: 1px 1px 1px rgba(0, 0, 0, .45), inset 1px 1px 1px rgba(255, 255, 255, .30);
    -moz-box-shadow: 1px 1px 1px rgba(0, 0, 0, .45), inset 1px 1px 1px rgba(255, 255, 255, .30);
    box-shadow: 1px 1px 1px rgba(0, 0, 0, .45), inset 1px 1px 1px rgba(255, 255, 255, .30);
}

.bn3 {
    width: 254px;
    margin-left: 47px;
    height: 45px;
    color: #ffffff;
    font-weight: 700;
    font-size: 18px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    border: 1px solid #279df7;
    background: #279df7;
    background: -moz-linear-gradient(top, #279df7 0%, #0188f3 100%);
    background: linear-gradient(top, #279df7 0%, #0188f3 100%);
}

input {
    margin-left: 20px;
    width: 251px;
    height: 32px;
}